EP3265838A1 - Verfahren zum richtungsermitteln einer wasserschallquelle rechnerprogrammprodukt rechner oder sonar sowie wasserfahrzeug - Google Patents
Verfahren zum richtungsermitteln einer wasserschallquelle rechnerprogrammprodukt rechner oder sonar sowie wasserfahrzeugInfo
- Publication number
- EP3265838A1 EP3265838A1 EP16711964.3A EP16711964A EP3265838A1 EP 3265838 A1 EP3265838 A1 EP 3265838A1 EP 16711964 A EP16711964 A EP 16711964A EP 3265838 A1 EP3265838 A1 EP 3265838A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- max
- sonar
- determining
- computer
- maximum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
- G01S3/802—Systems for determining direction or deviation from predetermined direction
- G01S3/805—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristics of a transducer or transducer system to give a desired condition of signal derived from that transducer or transducer system, e.g. to give a maximum or minimum signal
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/78—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic or electromagnetic waves, or particle emission, not having a directional significance, are being received using electromagnetic waves other than radio waves
- G01S3/7803—Means for monitoring or calibrating
Definitions
- the invention relates to a method for determining the direction of a water sound source, which emits a water sound signal, by means of a
- Hydrophone assembly which forms a linear antenna or a virtual linear antenna, a computer program product and a computer and a sonar and a watercraft.
- Determining an object from an underwater vehicle is usually a difficult task, since both the direction (bearing) and the distance must be determined. The further away the object to be defective is, the greater any errors in the determination of the directional angle (bearing angle) have an effect.
- the linear antenna is gradually pivoted electronically or computer technology and determines the incoming signal strength.
- the angle with the highest beamformed signal strength corresponds to the direction angle, on the basis of which, for example, a subsequent distance determination is carried out.
- the object of the invention is to improve the state of the art.
- the object is achieved by a method for determining the direction of a water sound source, which emits a water sound signal, by means of a
- Hydrophone assembly forming a linear antenna or a virtual linear antenna, the method comprising the steps of:
- a fast method can be provided, which within a measuring interval (measuring time) provides improved direction indication (bearing).
- the number of hydrophones and / or the computational effort can be reduced or increased according to the step size angle.
- this is inventively achieved in that the mathematical fitting method and the determination of the associated maximum of the fitting function can be done very quickly. In addition, this in turn leads to an improvement in the
- direction to the underwater sound source is determined at a reference point, for example the center point and / or pivot point of the linear antenna Direction also uses the term bearing. In the present case direction and bearing are synonymous to understand.
- a "waterborne sound source” is, in particular, a natural or artificial object that emits sound waves from a localized area, such as a ship's propulsion and / or a point source, and a water sound source is also an artificial or natural object. which one previously sent
- Underwater sound signal reflected For example, an underwater vehicle placed on the “lurking”, which is “pinged” by an active sonar of another watercraft by means of water sound and thus reflects the water sound signal, in the present case understood as a water sound source.
- a "water sound signal” is in particular an acoustic transient signal in the water, with a time duration of 10 ms to 200 ms, which may extend in particular in the range of 2 Hz to several 100 kHz, with a waveform that modulates frequency is and / or has a constant wavelength.
- a “hydrophone arrangement” comprises at least two piezoceramics in which the water sound signal causes a change in voltage, which is signal-conditioned
- Such a hydrophone arrangement in particular between 50 and 300 hydrophones.
- a "linear antenna” is given in particular if the individual hydrophones of the hydrophone arrangement are arranged along a straight line, for example in the case of a side-scan sonar, but also curved hydrophone arrangements or, for example
- Hydrophone arrangements with a cylinder base can form a linear antenna, which in the present case will then be referred to as a virtual linear antenna, since these are converted into a linear antenna by signal technology and / or computation.
- a virtual linear antenna since these are converted into a linear antenna by signal technology and / or computation.
- a "first measuring time ti" comprises a period of time or a time interval so that the antenna pivot analysis can be carried out During this first measuring time, in particular the voltage applied to each hydrophone due to the water sound signal is determined by measurement. which changes over the measuring time.
- An "electronic antenna pivotal analysis” is a different type of deceleration, technically and / or electronically, for each individual hydrophone, so that the linear antenna is rotated or curved electronically or computationally (see Manfred Siegel, Introduction) in the physics and technology of the underwater sound systems (ISBN 3-936799-28-8) page 5-41 to page 5-60, the related content is part of the present application.
- the turning or bending takes place in particular in that the individual hydrophones are "read out” with a different time offset, so that there are “time-delayed” hydrophones.
- the "sum signal S" is in particular the accumulated signal of all (time-delayed) hydrophones.
- the “rotation angle” results from the electronically and / or computationally rotated linear antenna or virtual linear antenna around a pivot point
- These 90 sum signal values S with the associated Rotation angles are then stored in particular in the "measurement series S ()".
- the directly adjacent sum signals are included around the maximum sum signal S max ( max ) in the matching series.
- the sum signals are used symmetrically about the maximum sum signal S max ( max ).
- the fitting measuring series S F i t (c) has at least three measured values
- the fitting measuring series 5, 7, 9, ... have sum signals.
- the metrologically determined maximum rotation angle does not coincide with a maximum rotation angle of a local minimum of the mathematical fitting function, but has surprisingly been found that the local or global maximum often a much correct rotation angle for the direction determination of a
- the method or sub-steps of the method can be performed at a second measuring time t2, at a third measuring time t3f at a fourth measuring time and / or at further times t
- the corresponding measurement series S () t or the determined directions of the water sound source are averaged.
- This approach provides excellent results especially in the case where the water sound source does not move.
- the corresponding measurement times result, in particular, from the respective repetition rate with which the hydrophone arrangement is interrogated electronically or computationally, or a superimposed window function which is superimposed on the respective measurement curves of the hydrophones as filters.
- the further sum signals are adjacent sum signals to
- the mathematical fitting function can be a polynomial function, a Gaussian function, a Lorentz function or a Voigt function.
- both the Gaussian function and the Lorentz function describe bell curves, while, for example, the Voigt function is in particular a convolution of the Gaussian and Lorentz functions, in which, for example Widening effects due to the water and its properties on the underwater sound can be compensated.
- the object is achieved by a computer program product which is set up in such a way that the method described above can be imprinted on a computer or a sonar.
- a software can be provided on a data carrier, which instructs a computer or a sonar instructions that the inventive method described above is feasible.
- existing computer systems and / or sonars can be adapted so that they perform the process.
- the object is achieved by a computer which is set up such that a previously described method can be carried out.
- the object is also achieved by a sonar which is set up in such a way that a previously described method is carried out or which has a computer as described above.
- Figure 2 is a highly schematic representation of a computational turning of
- FIG. 3 shows a functional relationship between a cumulative signal strength S and a rotation angle and three associated measured values and the determined mathematical fitting function as well as a global maximum associated with the mathematical fitting function and a rotation angle derivable therefrom.
- a side view type antenna 101 is disposed on a submarine 111.
- the side view monitor antenna 101 includes individual hydrophones 103 having a piezoceramic. By impressed by a water sound signal pressure differences on the piezoceramics, a voltage is generated, which is processed by metrology and evaluated. This preparation and evaluation takes place almost continuously. This results in a hydrophone over time a quasi-continuous
- the increment for turning ⁇ 2 °.
- a cumulative sum signal is formed across all the hydrophones 103 for each angle formed thereby.
- the rotation takes place in the direction of rotation 225.
- the rotation takes place about the pivot point 227, which in this case the center of the hydrophones, in this case the middle hydrophone with the number 76, is.
- the maximum oifi t , max is determined for the determined mathematical fitting function 341. This deviates somewhat from the value ( max ) determined by the rotation of the side view sonar.
- the thus determined maximum value oifi t , max is a marked improvement to the angle value max and indicates the direction from the pivot point 227 to the point of the sound source 229, so that a bearing takes place.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015103322.4A DE102015103322A1 (de) | 2015-03-06 | 2015-03-06 | Verfahren zum Richtungsermitteln einer Wasserschallquelle, Rechnerprogrammprodukt, Rechner oder Sonar sowie Wasserfahrzeug |
| PCT/DE2016/100055 WO2016141917A1 (de) | 2015-03-06 | 2016-02-09 | Verfahren zum richtungsermitteln einer wasserschallquelle rechnerprogrammprodukt rechner oder sonar sowie wasserfahrzeug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3265838A1 true EP3265838A1 (de) | 2018-01-10 |
| EP3265838B1 EP3265838B1 (de) | 2021-03-31 |
Family
ID=55637108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16711964.3A Active EP3265838B1 (de) | 2015-03-06 | 2016-02-09 | Verfahren zum richtungsermitteln einer wasserschallquelle rechnerprogrammprodukt rechner oder sonar sowie wasserfahrzeug |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US10509094B2 (de) |
| EP (1) | EP3265838B1 (de) |
| AU (1) | AU2016228475B2 (de) |
| CA (1) | CA2975332C (de) |
| DE (1) | DE102015103322A1 (de) |
| IL (1) | IL253455B (de) |
| WO (1) | WO2016141917A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180081023A1 (en) * | 2015-03-06 | 2018-03-22 | Atlas Elektronik Gmbh | Method for Determining the Direction of a Source of Waterborne Sound, a Computer Program Product, a Computer or Sonar, and a Watercraft |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816938B (zh) * | 2020-12-25 | 2022-08-09 | 中国船舶重工集团有限公司第七一0研究所 | 一种主动声呐脉冲信号测向方法 |
| CN112683389B (zh) * | 2021-01-13 | 2022-11-01 | 山东省科学院海洋仪器仪表研究所 | 一种纵振矢量水听器 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4202050A (en) * | 1969-11-28 | 1980-05-06 | Martin Klein | Multi-angular sector sound transmitting and receiving system |
| DE4442935A1 (de) | 1994-12-02 | 1996-06-13 | Stn Atlas Elektronik Gmbh | Verfahren zum Peilen schallabstrahlender oder schallreflektierender Ziele |
| US6292433B1 (en) * | 1997-02-03 | 2001-09-18 | Teratech Corporation | Multi-dimensional beamforming device |
| DE19825886C2 (de) * | 1998-06-10 | 2000-09-07 | Stn Atlas Elektronik Gmbh | Verfahren zur Bestimmung der Tiefe von getauchten Schallquellen |
| KR101108966B1 (ko) * | 2003-07-11 | 2012-01-31 | 블루 뷰 테크놀로지스, 인크. | 2d 및 3d 영상을 위한 주파수-조정 음향 세트 배열 실시시스템 및 그 방법 |
| DE102009047941B3 (de) * | 2009-10-01 | 2011-03-24 | Atlas Hydrographic Gmbh | Verfahren zur akustischen Vermessung eines Gewässergrundes sowie Fächerloteinrichtung |
| DE102015103322A1 (de) * | 2015-03-06 | 2016-09-22 | Atlas Elektronik Gmbh | Verfahren zum Richtungsermitteln einer Wasserschallquelle, Rechnerprogrammprodukt, Rechner oder Sonar sowie Wasserfahrzeug |
| US9829565B1 (en) * | 2016-02-19 | 2017-11-28 | The United States Of America As Represneted By The Secretary Of The Navy | Underwater acoustic beacon location system |
-
2015
- 2015-03-06 DE DE102015103322.4A patent/DE102015103322A1/de not_active Withdrawn
-
2016
- 2016-02-09 WO PCT/DE2016/100055 patent/WO2016141917A1/de not_active Ceased
- 2016-02-09 EP EP16711964.3A patent/EP3265838B1/de active Active
- 2016-02-09 US US15/555,623 patent/US10509094B2/en active Active
- 2016-02-09 CA CA2975332A patent/CA2975332C/en active Active
- 2016-02-09 AU AU2016228475A patent/AU2016228475B2/en active Active
-
2017
- 2017-07-12 IL IL253455A patent/IL253455B/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180081023A1 (en) * | 2015-03-06 | 2018-03-22 | Atlas Elektronik Gmbh | Method for Determining the Direction of a Source of Waterborne Sound, a Computer Program Product, a Computer or Sonar, and a Watercraft |
| US10509094B2 (en) * | 2015-03-06 | 2019-12-17 | Atlas Elektronik Gmbh | Method for determining the direction of a source of waterborne sound, a computer program product, a computer or sonar, and a watercraft |
Also Published As
| Publication number | Publication date |
|---|---|
| US20180081023A1 (en) | 2018-03-22 |
| US10509094B2 (en) | 2019-12-17 |
| IL253455A0 (en) | 2017-09-28 |
| IL253455B (en) | 2022-03-01 |
| CA2975332A1 (en) | 2016-09-15 |
| DE102015103322A1 (de) | 2016-09-22 |
| EP3265838B1 (de) | 2021-03-31 |
| WO2016141917A1 (de) | 2016-09-15 |
| CA2975332C (en) | 2019-03-05 |
| AU2016228475A1 (en) | 2017-09-28 |
| AU2016228475B2 (en) | 2018-10-04 |
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